Compilare: main.cpp: In function 'void Solve()': main.cpp:52:15: warning: unused variable 'k' [-Wunused-variable] int i,j,t,k,Node,Cost; ^ main.cpp: In function 'void Read()': main.cpp:12:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&N,&M,&Q); ^ main.cpp:15:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&X,&Y,&P); ^ main.cpp: In function 'void Solve()': main.cpp:56:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&Node,&Cost); ^